The key to pain reduction of leech lies in its saliva

Maxson said that the key to the "pain reduction" of leech lies in its saliva, because its saliva contains several anti-inflammatory ingredients, which can penetrate into human joint tissues. Desser, a professor of bacteriology at the University of Toronto in Canada, said that when leeches bite a person, they release a series of chemicals, and some of these chemicals have the effect of reducing inflammation and are equivalent to anti-inflammatory agents.